*{
    box-sizing: border-box;
}

html ,body,#app{
    height:100%;
    margin:0;
    padding:0;
}

body{
    background: #eee;
    font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
}

h1{
    font-weight: 200;
    color: #3b414c;
    font-size: 20px;
}

ul{
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.app{
    white-space: nowrap;
    height: 100%;
}

.list{
    position:relative;
    display: inline-block;
    vertical-align: top;
    white-space: normal;
    height:100%;
    width: 33%;
    padding: 0 20px;
    overflow: auto;
}

.list:not(:last-child):after{
    content: "";
    position:absolute;
    top: 0;
    right: 0;
    width: 1px;
    height:99%;
    background: linear-gradient(to bottom,#eeeeee 0%,#cccccc 50%,#eeeeee 100%) fixed;
}

.card {
    position: relative;
    z-index: 1;
    background: #ffffff;
    width: 100%;
    padding: 10px 10px 10px 15px;
    margin: 0 0 10px 0;
    overflow: auto;
    border:1px solid #e5e5df;
    border-radius: 3px;
    box-shadow: 0 1px 0 rgba(0,0,0,0.25);
}

.card_title{
    font-weight: bold;
    border-bottom: solid 5px transparent;
}

.card_title:before{
    display: inline-block;
    width: 1em;
    content: "▶";
}

.card_title--is--open:before{
    content:'▼'
}

.checklist_task:first-child{
    margin-top:10px ;
    padding-top: 10px;
    border-top:dashed 1px #dddddd;
}

.checklist_task--remove:after{
    display: inline-block;
    color: #d66;
    content: "+";
}

.checklist--add-task{
    border: 1px dashed #bbb;
    width:100%;
    padding:10px;
    margin-top:5px;
    border-radius: 3px;
}